dmaengine: remove s3c24xx driver

The s3c24xx platform was removed and this driver is no longer
needed.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221021203329.4143397-14-arnd@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>